Video displays that offer both 2-D and 3-D imaging without the use of eyewear are very popular to consumers worldwide. Viewers, however, usually have to watch from a distance of around one meter. This eradicates the application of this technology to mobile devices. But researchers at Seoul National University, South Korea, have simplified and shrunk the architecture of the technology to convert these displays for near-viewing capabilities.
Praying mantises fitted with blue and green miniature glasses prove the insects use 3D vision to hunt. This could help scientists better understand how vision evolved in humans, and ultimately improve visual perception in robots.